Ma. Shiela Andrea T. Canillas Feb. 24, 2020 March 2, 2020: Nam E: Date Performed: Score: Date Submitted
Ma. Shiela Andrea T. Canillas Feb. 24, 2020 March 2, 2020: Nam E: Date Performed: Score: Date Submitted
Ma. Shiela Andrea T. Canillas Feb. 24, 2020 March 2, 2020: Nam E: Date Performed: Score: Date Submitted
TACLOBAN COLLEGE
Division of Natural Sciences and Mathematics
LABORATORY EXERCISE 9
THE FRUIT
1. Study carefully all the fruit specimens and try to match their types with
the list below. Identify the fruit variations and complete Table 8.1.
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University of the Philippines Visayas
TACLOBAN COLLEGE
Division of Natural Sciences and Mathematics
comosus exocarp
15. Cucurbita
Indehiscent Fleshy Pepo Parietal Mesocarp
moschata
16. Citrus
Indehiscent Fleshy Hesperidium Axile Endocarp
grandis
17. Spondias All except
Indehiscent Fleshy Berry Basal
purpurea seeds
18. Hibiscus
Dehiscent Dry Capsule Axile Whole fruit
esculentus
19. Bixa orellana Dehiscent Dry Multiple Free-basal Seeds
20. Cosmos Dehiscent Dry Achene Basal None
21. Zea mays Indehiscent Dry Caryopsis Basal Kernels
22. Lycopersicon
Indehiscent Fleshy Berry Axile Whole fruit
esculentum
23. Lansium Mesocarp
parasiticum Indehiscent Fleshy Berry Superficial and
endocarp
24. Citrus limon Indehiscent Fleshy Hesperidium Axile Endocarp
1. Cut each of the fruits crosswise and identify all parts; e.g. pericarp,
locules, seeds, etc. determine also the type of placentation
Table 9.2 Types of Placentation
Scientific Name Type of Placentation
1. Vigna sesquipedalis Marginal
2. Psidium guajava Axile
3. Fragaria vesca Basal
4. Cucumis sativus Parietal
5. Citrus microcarpa Superficial
6. Mangifera indica Basal
7. Pyrus malus Axile
8. Ricinus communis Basal
9. Tithonia diversifolia Basal
10. Oryza sativa Basal
11. Cocos nucifera Basal
12. Dolichos lablab Marginal
13. Anona squamosa Basal
14. Ananas comosus Axile
15. Cucurbita moschata Parietal
16. Citrus grandis Axile
17. Spondias purpurea Basal
18. Hibiscus esculentus Axile
19. Bixa Orellana Free-basal
20. Cosmos Basal
21. Zea mays Basal
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University of the Philippines Visayas
TACLOBAN COLLEGE
Division of Natural Sciences and Mathematics
22. Lycopersicon
Axile
esculentum
23. Lansium parasiticum Superficial
24. Citrus limon Axile
STUDY QUESTIONS:
1. In some of the fruits, the fruits are persistent even up to maturity.
Identify these parts. Consider Psidium guajava and Oryza sativa. What
are the structures attached at the upper part of the two fruits?
Fleshy and dry fruits are the two types of simple fruits that develop from the
ripening of a simple or compound ovary of a flower with only one pistil. The
main difference between fleshy and dry fruits is that fleshy fruit contains a
soft, pulpy and fleshy pericarp at maturity. Whereas dry fruits contain a hard,
papery or dry pericarp at maturity. Significantly, the pericarp is hardened and
edible.
Fleshy fruits are adapted to the dispersal of seeds by animals while dry fruits
are mainly adapted to the dispersal by the wind, expulsion or by getting
attached to the fur or feathers of animals. Therefore, in terms of seed
dispersal, a dry fruit posits a greater advantage than that of fleshy fruits since
its hard outer layer do not attract animals, so they do not get eaten[ CITATION
Lak19 \l 13321 ].
Also, another advantage of dry fruits over fleshy fruits are its health benefits.
Dry fruits like almonds, walnuts, dates, raisins etc. are traditionally known to
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University of the Philippines Visayas
TACLOBAN COLLEGE
Division of Natural Sciences and Mathematics
Monocot Dicot
Monocots generally have Dicots possess variety
large, fleshy seeds. Fruits when it comes to size and
or seedpods are generally shape of fruits / seedpods /
comprised of three parts. seeds. Generally, they have
greater number of seeds
per seedpod as compared
to monocots.
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University of the Philippines Visayas
TACLOBAN COLLEGE
Division of Natural Sciences and Mathematics
References:
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